1Why is methane called marsh gas?
2Where is methane found?
3Write any three physical properties of methane.
4Write four uses of methane.
5Why is ethane called a saturated hydrocarbon? Write its molecular formula.
6Why is ethane used in metal welding?
7Write three uses of propane.
8Why can butane be filled in cylinders and used as a fuel?
9What is the full form of LPG? Which gas is its main part?
10Write two properties shared by methane, ethane, propane and butane, and the number of carbon atoms in each.
11What is carbon black? Give two of its uses.